1. SHANDONG CHIK BEARING CO.LTD www.chikbearing.com Email:cindy@chikbearing.com
www.ball-rollerbearings.com Email:frank@chikbearing.com Mob/whatsapp:+86 15806683165
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CYLINDRICAL ROLLER BEARINGS
FEATURES
Our cylindrical roller bearings are available in many designs, series and sizes. The majority are single row
bearings with a cage. High-capacity bearings, single and double row full complement bearings (without a cage).
Due to the line contact in between rolling elements and raceways, CHIK cylindrical roller bearings have higher
radial load capacity and they are suited to high-speed applications due to their structure.Together with a high
strength cage design in pressed steel, the most cylindrical roller bearings consist of brass or polyamide and
provides low noise, low heat generation and, for much more difficult applications could be provided in a variety of
advanced special materials.Our cylindrical bearings are equally suitable for heavy radial and impact
loading.Having a separable inner or outer ring, these bearings can be easily mounted and dismounted.
ONE-ROW CYLINDRICAL BEARINGS
N Style single row - N style cylindrical roller bearings have two machined flanges in the inner ring with no
flanges on the outer ring, with rollers and cage on the inner ring. Much like the NU style, the N doesn't have
thrust load carrying capability.
NU style single row - NU style cylindrical roller bearings have two machined flanges in the outer ring with no
flanges in the inner ring.
NJ style single row - NJ style cylindrical roller bearings have two machined flanges in the outer ring plus a
machined flange on one side in the inner ring. The roller and cage assembly is in the outer ring. The integral
flange on the inner ring enables this bearing to handle an axial load.
NF style single row - NF style cylindrical roller bearings have two machined flanges in the inner ring and the
other flange in the outer ring, with roller and cage on the inner ring. Much like the NJ bearing, these bearings
possess some thrust load capability.
NUP style single row - NUP style cylindrical roller bearings are like the NJ style and come with a special ring
called a thrust collar. Mounted on the non-flange side of the inner ring, the thrust collar allows the bearing to
hold an axial load in both directions. The thrust collar extends out of your bearing on one side, therefore the
dimensions across the inner ring is slightly higher than that of the outer ring.
NP (Also able to carry incidental thrust loads in both directions, and may be used with a type RN or RU to
accommodate axial expansion and contraction. Two integral ribs on inner ring, one integral rib on outer ring.
TWO-ROW CYLINDRICAL BEARINGS (NN)
Cylindrical roller bearings, in which either the inner or outer rings has two ribs and the other ring has one, are
capable of taking some axial load in one direction Double-row cylindrical roller bearings have high radial rigidity
and are used primarily for precision machine tools
2. SHANDONG CHIK BEARING CO.LTD www.chikbearing.com Email:cindy@chikbearing.com
www.ball-rollerbearings.com Email:frank@chikbearing.com Mob/whatsapp:+86 15806683165
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CAGES
Small and medium-sized single row cylindrical roller bearings are generally fitted with pressed sheet cages.
Large-sized bearings are fitted with machined brass cages of normal design, i.e. cages of separable design
guided on rolling elements M, on the outside surface MA or inner surface MB.
In case of heavy loads and high speeds, cages are made in one piece.
LOADS
Cylindrical roller bearings must be subjected to a given minimum load, so that a proper operation of these
bearings can be guaranteed.
This is necessary especially as the bearings are operated at high speeds and the centrifugal forces produce
additional friction in bearing due to the sliding between rollers and raceway.
The series
N2, N22 , N3, N23 , NF2, NF22 , NF3, NF23 , NF4 ,NU10 , NU2, NU22 , NU3, NU23 , NU4 , NJ10 , NJ2,
NJ22 , NJ3, NJ23 , NJ4 , NUP2, NUP22 , NUP3,NUP23 ,NUP4 , NN
Subject Symbol Description
Radial internal clearance C2 Less than normal.
CN Normal clearance. Is not indicated as a standard.
C3 Greater clearance than normal.
C4 Greater than C3.
C5 Greater than C4.
Other technical
modifications
K Tapered bore.
Cage types M Brass cage ball guided.
S
Pressed steel cage. Riveted cage. Is not indicated as a
standard.
Speed ratings V Normal vibration level. Is not indicated as a standard.
V2 Lower vibration level than normal.
V3 Lower vibration level than V2.
V4 Lower vibration level than V3.
Tolerances P0 Normal tolerance level. Is not indicated as a standard.
P6 Greater tolerance level than P0.
P5 Greater tolerance level than P6.